Sprinkler head



y 1957 A. WIEBE 2,793,910

SPRINKLER HEAD Filed Feb. 1, 1955 I i /7 /5 30 l5 A-IZ l0 INVENTORARTHUR WIEBE ATTORNEY SPRINKLER HEAD Arthur Wiebe, Chico, Califi,assignor to Gustave Miller, Washington, D. C. I

Application February 1, 1955, Serial No. 485,401 I 4 Claims. (Cl.299-60) This invention relates to a sprinkler system and head thereforeand more particularly to a prefabricated plastic sprinkler headprimarily adapted for use in underground sprinkling systems such as areinstalled for the irrigation of lawns, gardens, or the like.

A primary object of this invention is the provision of an improvedsprinkler system including plastic heads which may be simply andexpeditiously installed, at a compara: tively low cost, by reason of theelimination of tees, nipples, ells, couplings, etc.

An additional object of the invention is the provision of an improved,preferably integral, sprinkler head provided with means whereby the flowof water through the head may be readily and simply adjusted.

A further object of the invention is the provision of such a sprinklerhead provided with anchoring means whereby the system, including thepiping therefore, may be anchored at a predetermined underground level,with the top of the sprinkler head flush with the lawn or the like.

An additional object of the invention resides in the provision of amodified form of sprinkler head which may be readily applied to existingplastic hose or pipes.

Still other objects reside in the combinations of elements, arrangementsof parts, and features of construction, all as will be more fullyhereinafter pointed out, and disclosed in the accompanying drawingwherein there are disclosed preferred embodiments of this inventiveconcept.

In the drawing:

Figure l is a schematic side elevational view, partially broken away,showing a sprinkler system in accordance with the instant invention ininstalled position.

Figure 2 is an end elevational view of one of the sprinkler heads ofFigure l, the feed pipe being shown in section.

Figure 3 is an enlarged sectional view of one of the sprinkler headstaken substantially along the line 3-3 of Figure 4 as viewed in thedirection indicated by the arrows.

Figure 4 is a sectional View taken substantially along the line 4-4 ofFigure 3 as viewed in the direction of the arrows, and

Figure 5 is an end elevational view of a modified form of construction,certain concealed parts thereof being indicated in dotted lines.

Similar reference characters refer to similar parts throughout theseveral views of the drawing.

Having reference now to the drawing in detail and more particularly toFigure 1 there is generally shown in fragmentary schematic sideelevation a portion of a sprinkler system constructed in accordance withthe instant invention, wherein 10 indicates a feed pipe, preferably ofplastic, provided at spaced intervals with a plurality of integrallymolded sprinkler heads 11 each consisting of a cylindrical shank portion12 and an integral inverted frusto-conical portion 13, surmounted by acircular top 2,793,910 Patented May 28, 1957 ice larged circular chamber17 which flares outwardly to an interiorly threaded bore 18.

The bore 18 has threaded thereinto a metallic plug member generallyindicated at 20 which comprises an; upper plate 21 having a centralaperture 22 and connectedby an externally threaded annular skirt onflange 23 to a lower plate 24. Lower plate 24 isprovided with a seriesof spaced circumferentially inclined passageways 25 communicating withchamber 17, in such manner that water under pressure entering chamber 17passes through inclined apertures 25 in a rotary direction intothechamber 26 between upper plate 21 and lower plate 24 and passesoutwardly through aperture 22 with a swirling or rotary effect.

Depending from the center of lower plate 24 is a valve stem 30terminating in a conical valve 31 adapted to be positioned a selecteddistance from valve seat 15a, which distance may be governed by rotationof the metallic plug 20, to control the volume of water passed from thepipe 10 through bore 15 into chamber 17.

Positioned on the lower side of each of heads 11 is an anchor bar 32pivoted for rotation as on a pivot 33. In the original installation ofthe system, the anchor bars are adapted to be positioned longitudinallyof pipe 10, in a previously dug trench or ditch, and turned transverselythereto, as best shown in Figure 2, prior to re filling the ditch,whereupon, when the ditch is filled, the cross piece 32 serves to anchorthe pipe 10 and its associated sprinkler heads 11 securely in position.

. Figure 5 disclosed a modified form of construction particularlyadapted for installation on an existing hose or plastic pipe 40. Asuitable aperture 41 is cut in the pipe 40 at the point at which it isdesired to install a sprinkler head 42 in all respects similar to thepreviously described head 11 with the exception of the fact that thestern portion is comprised of an upper portion 43 and a lower portion44, each provided with appropriate coacting cutaway semi-cylindricalrecesses 45 for the encirclement of the pipe 40.

The lower portion 44 is secured in fluid tight relation about the pipe40 to the upper portion 43 about the pipe 40 by means of two stud screws45, the heads of the screws 45 being suitably countersunk so as not tointerfere with the pivoting of the stabilizer 46 on its pivot 47 toanchor head 42 in its trench of ditch. The valve mechanism of this formof head may be identical with that of the form of head shown at 11. Infact, the head 42 differs from that at 11 only by being transverselydivided at the midline of the hose aperture therethrough, with theaddition of studs, which may be self threading to hold more securely inplastic, to hold the separated portions together about the hose.

From the foregoing it will now be seen that there is herein provided animproved sprinkler system and plastic head therefore which accomplishesall the objects of this invention, and others, including many advantagesof great practical utility and commercial importance.

As many embodiments may be made of this inventive concept, and as manymodifications may be made in the embodiments hereinafter shown anddescribed, it is to be understood that all matter herein is to beinterpreted merely as illustrative, and not in a limiting sense.

Having thus set forth and disclosed the nature of this invention, whatis claimed is:

1. An underground sprinkler system comprising a sprinkler head having aplastic body including an upper fluid discharging surface adapted to bepositioned-flush with the ground surface, a vertical bore in said bodyand an underground pipe'co'mprising a fluid supply source incommunication with said vertical bore insa'id head, said pipe extendingtransversely through said head, said pipe extending through a filledtrench in the ground, and a head anchoring bar pivotally secured to thebottom thereof and rotated transversely of the trench previously to thefilling of the trench.

2. The underground sprinkler system of claim 1, said plastic head havingthe plastic pipe thereof molded thereto.

3. The underground sprinklersystem of claim 1, said head being dividedtransversely at the midline of where said hose is secured transverselytherethrough, and threaded means on opposite sides of said transverselyextending hose securing said divided head portions about said hose.

4. A sprinkler system comprising a flexible nonmetallic conduit adaptedto be buried in the earth, a plurality of elongated stand-pipes carriedbyand extending in the same direction from said flexible conduit andadapted to be buried in the earth together with said flexible conduitand with said stand-pipes disposed in a substantially vertical position,a spray head carried by the upper end of each stand-pipe and adapted tobe located at the surface of the earth, said spray head including aspray opening for discharging Water upwardly, means providing a watertight connection between the lower end of each stand-pipe and saidflexible conduit at intervals along said flexible conduit and meansrigidly associated with said first mentioned means for resistingrotation of said conduit about its axis due to torque generated by alateral force exerted against the upper end of said stand-pipe from asource above the ground, said last mentioned means having at least oneportion extending laterally from said conduit.

References Cited in the file of this patent UNITED STATES PATENTS1,289,962 Thompson Dec. 31, 1918 1,811,042 Desmond June 23, 19311,962,534 Sweetland June 12, 1934 1,964,097 Van Doren June 26, 19342,033,107 Armstrong Mar. 10, 1936 2,706,134 Wilson et al Apr. 12, 19552,714,037

